Quick Answer
Speed-Gro vs Deluxe Speed-Gro in Stardew Valley
speed gro vs deluxe speed gro stardew valley（基础加速 vs 豪华加速肥）
Quick Answer
Deluxe Speed-Gro is the better choice when you’re trying to force an extra harvest (late-season planting, tight greenhouse cycles, or any situation where 1 day matters). It’s especially useful on regrowing crops when an earlier first harvest can create one extra pickup before season end.
Speed-Gro is the better “default” when you want a cheaper timing boost across a large field and you’re not right on the edge of an extra harvest.
If you’re unsure, treat it like this: if Deluxe Speed-Gro changes the number of harvests, it’s usually worth it; if it doesn’t, you’re mostly paying for convenience.
Growth Speed Comparison Table
Table uses crop timings from src/data/crops.json (base growth + regrow). The exact rounding behavior for Speed-Gro in-game can be fiddly; for planning, validate your exact setup using the calculator presets below. For regrowing crops, Speed-Gro changes first-harvest timing only and does not shorten the fixed regrow interval.
| Crop | Base | Speed-Gro (≈10% faster) | Deluxe Speed-Gro (≈25% faster) | Why It Matters |
|---|---|---|---|---|
| Pumpkin | 13d | 12d | 10d | Main value is squeezing in an extra harvest when daysLeft is tight (+1d / +3d). |
| Cranberry | 7d + regrow 5d | 7d + regrow 5d | 6d + regrow 5d | Often adds 1 extra harvest when you're timing-limited by pulling first harvest earlier (base regrow 5d stays fixed). |
| Grape | 7d + regrow 3d | 7d + regrow 3d | 6d + regrow 3d | Often adds 1 extra harvest when you're timing-limited by pulling first harvest earlier (base regrow 3d stays fixed). |
| Blueberry | 13d + regrow 4d | 12d + regrow 4d | 10d + regrow 4d | Often adds 1 extra harvest when you're timing-limited by pulling first harvest earlier (base regrow 4d stays fixed). |
| Hops | 11d + regrow 1d | 10d + regrow 1d | 9d + regrow 1d | Often adds 1 extra harvest when you're timing-limited by pulling first harvest earlier (base regrow 1d stays fixed). |
When to Use Each
Use Speed-Gro when…
- You’re planting large fields and want a cheaper, broad speed boost.
- You’re not on a harvest-count breakpoint (extra harvest unlikely).
- You care more about earlier cashflow than maximizing harvest count.
Use Deluxe Speed-Gro when…
- You’re timing-limited (late in season, planting day is delayed).
- It turns a 2-harvest plan into 3 (or adds an extra regrow harvest).
- You’re optimizing greenhouse / keg throughput cycles.
Cost Analysis (Break-Even Logic)
Fertilizer cost is only worth it if it either (1) increases harvest count, or (2) helps you align processing / cashflow in a way that beats the extra spend.
A simple rule: if Deluxe Speed-Gro creates +1 harvest, the break-even threshold is roughly:
- Extra profit from +1 harvest ≈ (sell price × yield) − (seed cost, if you must replant)
- If that extra profit is greater than the fertilizer cost difference, Deluxe is a win.
Example context from our crop dataset: in Fall, Cranberry is a regrow crop (seed cost 240g, sell 75g, yield 2 per harvest) and Pumpkin is a single-harvest crop (seed cost 100g, sell 320g). Regrow crops tend to get more “harvest count” value out of speed.
For a precise answer on your farm, use the presets below and compare gold/day with and without speed.
Calculator Presets
These links open the profit calculator with pre-filled scenarios. Compare outcomes between baseline vs faster growth plans.
Note: the current calculator doesn’t model Speed-Gro items directly. Use Agriculturist as a speed-control proxy and focus on the breakpoint question: does faster growth change harvest count?
FAQ
EN
- Is Deluxe Speed-Gro always better than Speed-Gro?
- Does Speed-Gro affect regrow time (like Cranberries)?
- What crops benefit most from Speed-Gro?
- Does Speed-Gro stack with Agriculturist?
- Is it worth using Speed-Gro late in the season?
- Does Speed-Gro help in the Greenhouse?
ZH
- Deluxe Speed-Gro 一定比 Speed-Gro 更好吗？
- Speed-Gro 会减少再生作物的再生时间吗（比如蔓越莓）？
- 哪些作物最吃 Speed-Gro 的加速收益？
- Speed-Gro 能和 Agriculturist（农学家）叠加吗？
- 季节后期还值得用 Speed-Gro 吗？
- 温室里用 Speed-Gro 值得吗？
Action Block
Run this strategy with your own numbers
Use the calculator for a live scenario, then compare against 3-5 related internal guides before you lock your planting or processing plan.